The innovative switching solution EnergySwitch provides a way to increase the on-site consumption of solar power without the need to invest in battery systems. A simple application of this technology allows the solar photovoltaic system to generate hot water by activating the immersion heater in a hot water tank when excess power of the sun is available. The hot water is normally stored and can be used by the system owners when it is needed.

Mastervolt also announces a new inverter for smaller PV-installations: the transformer-less SunMaster ES3.6TL achieves a maximum output of 16A AC (3.6kW). The total PV array can be connected as a single string to the 900V DC input of the ES3.6TL. This unique feature makes system planning straightforward, installation easy and boosts yearly energy yield. The low level of self consumption by the SunMaster ES 3.6, combined with an intelligent start-up procedure, extends the daily operating hours by up to 40 minutes. Installation outside is possible thanks to the IP65 housing. The unit can be easily lifted to the loft or rooftop using the built-in handlebars.

At Ecobuild, Mastervolt will also showcase the whole range of the three-phase, transformerless CS series with outputs between 7.5 and 30 kW. The CS inverters are G59/2 certified and do not require an external (expensive) G59 relay. The CS inverters have high efficiencies up to 98%, and come with two MPP trackers. A wide input voltage range (1000 V) make the devices particularly versatile, allowing it to be applied in the most diverse projects.

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The company plusAmpere introduces an innovative “reflector and calculation system” offering an efficient and inexpensive way of increasing the overall yield of existing and newly planned photovoltaic and solar thermal facilities.

In the first half of 2019, solar, wind and other renewable sources accounted for 44 percent of the electricity consumed in Germany, marking a record high. Preliminary calculations by the Centre for Solar Energy and Hydrogen Research Baden-Württemberg (ZSW) and the German Federal Association of Energy and Water Management (BDEW) yielded this figure. Renewables had accounted for 39 percent of electricity consumption in the first half of 2018.

The biggest solar district heating system in Germany will begin construction shortly. Arcon-Sunmark is responsible for building the turnkey project on behalf of Stadtwerke Ludwigsburg-Kornwestheim. The solar heating system will be operational by the end of 2019.